When choosing a gourd or electric gourd, whether or not you need to be explosion -proof, explosion -barrier, anticorrosive, dustproof, anti -flammable, ordinary gourds, first of all, the environment of the place you use belongs to the environment that belongs to ordinary work. It belongs to ordinary work. The occasion is still used with dangerous occasions. What dangerous places are used if there is danger.

Methods of the environmental environment of the place of use, such as (flammable, explosive, easy to corrosion) chemistry, high temperature, water vapor, and other places to consider which type of explosion -proof hand -proofing hand pour gourd. What is the temperature and humidity of the place and whether the gourd can work normally.